Refrigerating apparatus



.u'ne 9; 1925. Y 1,541,754

c. c. SPREEN REFBIGERATING' APPARATUS Filed June 25, 1924 @sheets-smet z.

Patented June 9, 1925.

UNITED STATES PATENT oFFice.

CHARLES C. SPREEN, F DETROIT, MICHIGAN, ASSIGNOR, BY MESNE'iASSIGNMENTS, T0 KELVINATOR CORPORATION, OF `IHTTIROI'I, MICHIGAN, CORPORATIN 0F MTCHTGAN.

RFRIGERATING APIARATUS.

Application filed June 23, 1924. Serial No. 721,613.

To all whom t may concer/n.'

Be it known that I, CHARLES C. SrnnEN, a citizen of the United States of America, and a resident of Detroit, in the county of lVayne and State4 of Michigan, have invented certain newy and useful Improvements in Refrigerating Apparatus, of which the following 1S a full,\olear, and exact description.

rlhe adaptation of mechanical refrigerating Systems to small units suitable for installation in stores and houses has necessitated introducing into the systems heretofore used a large number of improven'ients particularly designed to increase the applicability of such systems to such use. My

invention provides a compressor unit embodying further suoli improvements and therefore superior t0 any previous compressor unit at least for use in these small installations. In the drawings accompanying this specification and forming a part thereof l have shown, for purposes of illustration, one physical embodiment which my invention may assume. In these drawings:

Figure 1 is a side elevation of this illustrative embodiment of my invention showing the condenser coil and deector in section,

Figure 2 is a longitudinal section through the over running clutch shown generally in side elevation in Figure 1, Y

Figure 3 is an end view of the deflector, while Figure 4 is an end view showing in de tail the motor support.

The compressor unit herein shown comprises a compressor 11 operated through reduction gears positioned within a gear housing 12 formed integral with the housing of the compressor 11 and driven by a shaft 13 which is itself operated, through a universal joint 14, an over ruiming clutch 15, an intermediate shaft 16, and a universal joint 17, from the armature shaft 18 of an electric motor 19 supported by means of a plurality of springs 20 from supporting members 21 carried by bracket arms 22 and plates 23 secured to the compressor unit base plate 24 which alsov carries the compressor unit 11.

The construction of the universal joint 14 and over running clutch 15 is more clearly shown in Figure 2 wherein this portion of the compressor unit is shown as comprising a collar 25 secured by means of a set screw 26 to the compressor operating shaft 13 and carrying a pair of pins 27 arranged to fit within cooperating lapertures 28 in a flexible disc 29 which isprovided with Afurther apertures 30 arranged to cooperate with pins 31 extending from the face' of a collar 32 which is unitary with a sleeve 33 andis provided with a central aperture 34 arranged to surround the intermediate shaft 16 to permit the collar 32 to cooperate with a second collar 35 also carried by the sleeve 33 and provided with an aperture 36-surrounding the intermediate shaft 16 whereby the collars 32 and 35 supportthe sleeve Y l 33 upon the Shaft 16 freely rotatable with respect thereto.v Positioned upon the shaft 16 interiorly of the sleeve 33 is a friction disc`37 secured against rotationv upon the shaft 16 by means of a @pin 38 carried by the disc 37 and passing through an aperture 39 in the shaft 16 elongated to permit limited movement of the disc 37 longitudinally of the shaft 16. Also positioned within the sleeve 33 and keyed thereto to permit longisleeve 33 while preventing rotation thereof relative-to the Sleeve 33, is a disc 40 carrying a friction face 41 arranged, when the disc ltudinal movement thereof `relative to the S0 40 is pressed toward the collar 32 bya spring 42 compressed between the disc 40 815 and the collar 35, to cooperate with aI friction face 43 carried by the collar 32 to frictionally engage the disc 37 carried by the shaft 16 between the friction faces 41 and 43 to thus transmit to the sleeve 33 and ultimately to tne shaft 13 rotation of the intermediate shaft 16 while permittingrotation of the shaft 16 independently of the shaft 13 when the resistance to rotation of the shaft 13 reaches a value sufficient to cause the disc 37 to slip over the friction faces 41 and 43.

The universal joint l17 may be formed similar to the universal joint 14.

Positioned between the compressor 11 and the motor 19 and surrounding the drive connecting the motor 19 to the compressor 11 is a condensing coil 44 suitable for condensing the refrigerant after it has been coinpressed by the compressor 11 and therefore Shown as having one end connected by means of a duct 45 to the outlet 46 of the compressor and the other end connected by means of a duct 47 to a shut-0H' valve 48 which is then connected by means of a duct 49 through the expansion valve and expansion coil (not shown) to a duct.50 leading to the inlet 51 of the compressor 11.

v In order to equalizethe vload imposed -I v:rent lamong the various turns lor' the condenser coil 44 I prefer -to interpose between the fan '52 and the condenser coil 44 a de-r flector 53' comprising a plurality of frustoconicalsurfaces 54 separated and interconnected by meansof crossmembers 55 and supported by meansfof a pedestal 56 arranged'to be secured to the base plate 24 of the compressor unit. l

From the above description it will be apparent that I have provided a compressor unit better adapted for use in -small refrigerating units than any compressor unit heretofore produced particularly because 'of the provision of means -for mounting the motor m such manner that vibratlon thereof can not be transmitted to the remainder of the.' unit to cause annoyinnr'vibrationof the entire unit and-because ot the provision of means for directing the air current upon the condenser coil in such manner that thecnrrent strikes every turn of the coil and is .utilized with the maximum efficiency. It

will be apparent to those skilled in the art that the lunit herein shown possesses advantages .other than those specifically set forth and also that the construction herein shown may be variously changed and modified Without sacrificing these advantages or departing from the spirit of my invention. It will therefore-be apparent that the disclosure herein is illustrative only and my invention not limited thereto.

I claim:

In combination, a compressor adapted to be inserted in a refrigerating system to compress the refrigerant, a motor adapted to Vdrive said compressor yand spaced from said `compressor, a drlv'e connecting said motor to said compressor, a fan operated by said motor, a condensing coil also adapted to be inserted in said refrigerating system and positioned between said motor and said compressor about said drive and in the path of the current set up by said fan, a plurality of supporting members positioned about said motor, a plurality of springs entirely supporting said motor fromsaid supporting members, and a deflector interposed between said fan'and said coil vand effective to direct said current over said coil in any' normal position in which said motor is supported by said springs.

In testimony whereof, I hereunto affix my signature.

. CHARLES C. SPREEN. 

